Before this before Text Split new Char for int Before Length if Before

Before =  this.before.Text.Split(new Char[] {'\n'});
           for (int i = 0; i < Before.Length; i++)
           {
               if (Before[i].Contains("Системные требования"))
               {
                   tmp = 1;
               }
               if (tmp == 1)
               {
                   Before[i] = null;
               }
               Before = Before.Where(n => !string.IsNullOrEmpty(n)).ToArray();
               ///////////
               tmp = 0;
           string[] SysReq;
           SysReq = this.before.Text.Split(new char[] {'\n'});
           for (int i = 0; i < SysReq.Length; i++)
           {
               if(SysReq[i].Contains("Системные требования"))
               {
                   tmp = 1;
                   break;
               }
               else {
                   SysReq[i] = null;
               }
           }
           SysReq = SysReq.Where(n => !string.IsNullOrEmpty(n)).ToArray();